stevemack
Well-Known Member
ok my km buggy has the 23cc in it. theres nothing wrong with it. i bought a used 30.5 off ebay and that i believe is good. lots of compression no scores on the piston or cylinder wall and the bearings appear good it also has a +2 crank. so should i pull a perfectly good running motor out to put in an untested used 30.5cc in it? is there that much difference in performance? what do you all think?